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Re: Grouping

Subject: Re: Grouping
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Mon, 21 Jan 2002 09:59:51 -0500
Re:  Grouping
At 2002-01-21 06:29 -0800, Maarten Meussen wrote:
I've been stuck on the next problem for a few days
now, eventhough the answer must be real simple ( I
think), I cant figure it out.

Multiple-level sorting with the pure Muenchian method involves divining a key combination that is unique at each level of the key sort and then recombining this for each node being tested.

Personally, I find that sorting sub-groups is a lot easier using variables instead of using key tables.

You don't give enough data to write a quick test file, but here is the outline of the code structure:

<xsl:variable name="firsts" select="XPath-of-first-level-sort-nodes"/>
<xsl:for-each select="$firsts">
  <xsl:if test="generate-id(.)=
    <!--first-level grouping completed-->
    <xsl:variable name="seconds" select="XPath-relative-for-seconds">
    <xsl:for-each select="$seconds">
      <xsl:if test="generate-id(.)=
        <!--second-level grouping completed-->

I hope the above helps.

................... Ken

-- Upcoming: 3-days XSLT/XPath and/or 2-days XSLFO - Feb 18-22, 2002

G. Ken Holman                mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
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